*{
    margin: 0;
    padding: 0;
    list-style: none;
    text-decoration: none;
}
.content{
    width: 100%;
    position: relative;
    height: 500px;
}
.content-top{
    width: 100%;
    height: 70px;
    position: absolute;
    top: 0;
    left: 0;
    z-index: 2;
    background-color: rgba(255, 255, 255, .4);
}
.content .imgs{
    width: 100%;
    height: 100%;
    position: relative;
}
.imgs > a{
    background-image: url(https://puui.qpic.cn/media_img/lena/PICgthm4a_580_1680/0);
    background-repeat: no-repeat;
    display: none;
    width: 100%;
    height: 100%;
    background-position: center 0;
}
.imgs > .active{
    display: block;
}
.menu{
    position: absolute;
    top: 70px;
    right:0;
    width: 350px;
    position: absolute;
    top: 70px;
    right: 0;
    height: 430px;
    background: rgba(15, 15, 30, 0.4);
}
.menu > a{
    display: block;
  height: 35px;
  line-height: 35px;
  margin-left: 45px;
  color: rgba(255, 255, 255, 0.7);
}
.cnhz {
    font-size: 22px;
    margin-top: 10px;
    margin-bottom: 20px;
    font-weight: 700;
  }
  .cnhz::after
  {
    position: absolute;
    content: '';
    height: 1px;
    top: 55px;
    left: 10px;
    right: 10px;

    background-color: rgba(255, 255, 255, 0.1);
  }
  .zbtj {
    font-size: 22px;
    margin-top: 10px;
    font-weight: 700;
  }
.cnhz > img , .zbtj > img{
    margin-left: -24px;
    margin-right: 10px;
}
.nav{
    font-size: 0;
}
.nav > span{
    font-size: 16px;
}
.menu .active{
    white-space: nowrap;
   text-overflow: ellipsis;
   width: 300px;
   font-size: 16px;
   color: orange;
   overflow: hidden;
}
.active span{
    font-size: 22px;
}